Ring type spinning machine



Oct. 4, 1932.

Filed Jan. 215; 1928 angular speed lar speed untilits full constant speed is at tained. At the same time and under the effect' of the tension of the thread tangent to the bobbin and due to the winding thereof on the bobbin, the s e'ed of slide 5 increases parallel with that o spindle 7 The centrifugal force and the tension of the thread which act on-the sli de.5 increase also and in accordance with the squarelaw of the speed of the slide 5 on the ring 1 in'the same manner and so thatthe slide is progressively rotated around the ring. lttfollows that the relatifve, displacement of the slide 5 on the ring 1 decreases as fast asthe speed of spindle This displacement tends .there- 7 increases. fore toward a limit represented by the annulling of such relative displacement of the slide with respect to the ring. Said limit corres onds thereforetoa fixed-position of the shde5' on the ring 1 and at an angular s eed of the slideiequal to that of the ring, tiie. latter being as is known, equal to the nown as vthe winding speed variablewith the varyin winding diameter of the'thread' on the bob in.

With such an" arrangement, if the ring were not braked, the thread being manufactured would be" subjected to constantly varg ing tensionsince-it would dependvupon the aulty operationdslweH varyingwinding diameter which 'ves way to a windin angle composed o vary ng forces, acco ing to a known Brinciple WhlCh has been 'roven experimenta y. I I

In mac ineof this'ty known in the art and rovided with a fixed ringllliavinga slide own as there is no compensating effect and regulator for establishing equilibrium witha view to obtaining a constant tension of the thread irrespective of'the varying winding diameter of thebobbin. y

In my'improved arrangement this'regulation is easily brought about as it is founded upon theory which has been thoroughly verified by experiment.

The said regulation isessentially due to the braking of the ring and such braking continuallypreserves a certain speed ofrotation of the ringl'and never instigates the stopping of said ring which is obvious.

The regulation of the tension of the thread is based on the new rinciple that the tension of. the thread bemg manufactured may be regulated by utilizing along the working parts of the rotating system a certain amount of variable compensating work as a regulator which is a function of the varying winding diameter of the bobbin, which efiect is produced as much along the tangent strands of the'thread as the free strands It will be evident that all relative displacement of the slide '5 on the ring 1. instigates a certain'amount of frictional work of sliding character which is equal to the product of the centrifugal force and the tension nesnaaa of the thread actin on the slide and the coefficient of sliding ric tion of the slide on the ring and the distance covered by the slide on the ring, that is, the relativelinear displacement of the slide on the ring. Now for one revolution of the spindle 7 this relative displacement depends obviously on the diff! ference between the angular speed of the" 'of the regulating and compensating work as before mentioned at will and in accordancewith the winding diameter and in suchwise.

that in. general the rin 1, is braked to a;

e slide greater extent 'for win ing thread, on the large winding diameter of the bobbin than on the small diameter the compensating work being therefore hi er for the said large diameter than for t e small diameter.

7 The purpose of the slide 5 is therefore vastly difierent in my system than that which is utilized in machines having 7 a fixed ring.

Consequently with my system I am enabled' to manufacture threads of very different,

numbers with the same slide.

Inaddition, the slide 5 may be varied inshape and dimensions and may be given several arms of divers shapes having contact surfaces of different extent and. development which are active to a greater or less-extent on the corresponding surfaces ofdisplacement and the'action of the ring 1. h

My improved machine allows the production of regular and constant winding or twisting under adjustabletension irrespective of the variations indiameter of the successive layers of wound thread and irrespective of the outline possessed by the wound thread. I

Due to the constant tension, the thread is stronger and better wound andhence more thread may be wound on the bobbin. 1 The number of breaks is diminished even with anincrease in winding speed of the spindles.

' This results in a product of better quality and increased production over devices of the prior art. r ,7

In addition my systemallows reduction of 'the minimum winding diameter usually empioyed and consequently reduction in the diameter of the spindle employed. {This results. in obtaining bobbins or cocoons of greater weight and therefore reduces the number of times the thread has to be taken up during production.

Another important advantage, as previously mentioned, is the winding or twisting of a whole series of threads of different numbers or quality with the same slide.

While I have shown what I deem to be the preferable form of my device I do not wish to be limited thereto as there might be various changes made in the details of construction and the arrangement of parts without departing from the spirit of the invention comprehended within the scope of the appended claim.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

In a device of the type described having a rotatable thread spindle, a spindle shifting plate concentric therewith, a ball race carried by said late, a rotatable ring concentric to said spindle andsaid plate, a second ball race formed on said ring adjacent one end thereof, a plurality of balls disposed in said ball races, a displaceable thread uide carried by the other extermity of said ring and means for increasing and decreasing the rolling between said plate and said ring at will for the purpose set forth.

In testimony whereof, I have signed my name to this s cification at Paris, France, this 9th day 0 January, 1928.

ALBERT N AU-TOURON. 

